Gravitational Force Calculator
Calculate gravitational force using Newton's law F = Gm₁m₂/r². Enter two masses and their distance.
How to Use the Gravitational Force Calculator
- Enter the first mass in kilograms.
- Enter the second mass in kilograms.
- Enter the distance between the centers of the two masses.
Quick Reference
| From | To |
|---|---|
| Earth–Moon | 1.98×10²⁰ N |
| Earth–Sun | 3.54×10²² N |
| Two 1 kg masses at 1 m | 6.674×10⁻¹¹ N |
| Person (70 kg) on Earth surface | ~686 N |
Use Cases
- •Calculating attraction between celestial bodies.
- •Physics problems on Newton's law of gravitation.
- •Space mission trajectory planning.
Formula
F = G × m₁ × m₂ / r², where G = 6.674×10⁻¹¹ N·m²/kg², m₁ and m₂ are masses (kg), r is distance (m).
Frequently Asked Questions
What is the gravitational constant?
G = 6.674×10⁻¹¹ N·m²/kg², a fundamental constant that governs the strength of gravitational attraction.
Does distance matter a lot?
Yes, gravitational force decreases with the square of the distance — doubling the distance reduces force by 4×.
Is this calculator free?
Yes, all OhMyCalc calculators are completely free.